Improvement in door-spring



i dilated 5mm `ENOS STIIMSON, OF MONTPELIER, VERMONT.

Letters Patent No. 92,486, dated July 13, 1869.

IMPROVEMENT IN DOOR-SPRING.

The Schedule referred to in these Letters Patent and making part of the same.

To all ywhom it .may concern.;

Be it known that I, Enns SriMsoN, of Montpelier, in the county of Vashington, and State of Vermont, have invented a new and improved Door-Spring; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had tothe accompanying drawings, forming-part of this specification.

This invention relates to a door-spring for holding a door either opened or closed.

It consists of two cast-ings'with flanges, by which to attach itto the door, having a recess to receive a stationary shaft, on the end of which is a ratchet-wheel with a slotted face, by which means it may be operated, being held in position by a dog in the main casting.

On the shafts of the ratchcts are two dat scrollsprings, attached to said shaft, upon which they are wound, the outer ends of said springs being connected together by a link, into which the springs hook.

ln the main castings is a crank-bar, which may be turned down on to the springs when the door is open, and as it shuts they take hold of side-hooks on the end of said springs, thus liberating the link, which may be readily removed.

In the accompanying drawings- Figurel is a perspective view of my door-spring, as applied to a door when'open.

Figure 2 is an end view ofthe spring and ratchet.

Similar letters of reference indicate corresponding parts.

A A represent the door and casing; B B, the main castings, with slots to receive the shafts C, with the slotted ratchets D, holding said shafts, to which are attached the scroll-springs E, which have a hook, F, on

the outer end, hooking into the link G, by which the springs are connected to the crank-bars. H, catching into the side-hooks t' t', on the end of the springs, and releasing the link when removed.

Having thus 'described my invention,

fhat I claim as new, and desire to secure by Letters Patent, is-- l 1. The combination and arrangement of slotted ratchet D, spring E, hook Randolink G, in manner and for the purposes substantially as herein set forth andv described.

2. The combination and arrangement of slotted ratchet D, spring E, hooks ii, and crank-bar H, substantially as herein set forth and described.

ENOS STIMSON.

lVitnesses:

A. A. STIMsoN, WILLIAM W. CADWELL. 

